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How to Read Your Profit and Loss Statement

September 8, 2026

You get a profit and loss statement every month, or you will once someone starts sending you one. Most owners open it, look at the number at the very bottom, and close it again. The middle of the page has real information sitting in it, and it’s worth learning to read.

Here’s what each part is telling you, in the order it appears on the page.

What a P&L is

A profit and loss statement covers one stretch of time, usually a month. It starts with what came in, subtracts what went out, and ends on what’s left. That’s the whole shape of it. Everything on the page is one of those three things.

Revenue is what you earned, separate from what hit your bank account

Revenue is the money your business earned in that period. On accrual-basis books, that’s a different question than what landed in your checking account. An invoice sent in August and paid in September counts as August revenue, because that’s when the work happened. This is the part that trips owners up most, since it means your P&L and your bank balance are answering two different questions.

Cost of goods sold: the cost tied directly to what you sold

If your business sells a physical product, or does work where materials go straight into the job, that direct cost usually gets its own line, cost of goods sold. Subtract it from revenue and you get gross profit: what’s left after paying for the thing itself, before anything else about running the business gets counted.

A service business with no materials often skips this line entirely and goes straight from revenue to expenses. That’s ordinary. The report is still complete without it.

Operating expenses: everything else it takes to run the place

Rent, software, insurance, payroll, marketing, the fee you pay a bookkeeper. Anything spent keeping the business running, separate from the cost of the product itself, lands here. This is usually the longest section on the page, and it’s often where the most useful information is.

Net income: what is left

Subtract operating expenses from gross profit, or straight from revenue if there is no cost-of-goods-sold line, and the number left is net income. This is the one most owners jump to first. It answers a real question: did the business make money in this period. It does not answer why.

The real signal is a trend across months

A single month’s net income tells you about that month. Line up several months side by side and a different picture shows up: a margin quietly shrinking while revenue holds steady, an expense category creeping up a little each month until it’s suddenly large, a slow month that looks alarming alone and ordinary next to the same month a year earlier.

One month shows you a single point in time. Several months together show you the trend.

If you would rather someone else read it for you

Monthly bookkeeping here comes with a report written in plain language every month, on top of the raw numbers. If you want to see where your own file stands right now, the free quiz is a two-minute way to check.

Take the free Books Health Quiz